[cairo] Re: [PATCH] PS/PDF improve efficiency of text output

[Behdad Esfahbod]

On Wed, 2006-10-25 at 23:19 +0930, Adrian Johnson wrote:
> Behdad Esfahbod wrote:
> > Looks good.  Minor comments follow, but other than that I think you
> > should go ahead and push this.  Better commit a not-perfect-yet patch
> > and get testing rather than letting it rot.
> 
> I'll update to include your comments then commit.
> 
> >> +#define MAX_GLYPHS_PER_SHOW  36
> > 
> > I'm not sure I understand why this is needed.  Can't a hex encoded
> > string be wrapped?  It works with ghostscript at least.
> 
> As each glyph position after the first is specified by the displacement
> from the previous glyph, would it be possible for a rounding error in
> the conversion from the displacement to the PS interpreter's internal
> representation to be large enough that very long xyshow strings have a
> noticeable error in the position of the last glyph?

Good point.  In reality that's not going to happen since no user of
cairo I know uses a single show_glyphs operation for multiple lines.
But doesn't hurt.

What about defining procedures for xshow, yshow, and xyshow?  Sx, Sy,
Sxy?  Or whatever the PDF equivalents are.

-- 
behdad
http://behdad.org/

"Commandment Three says Do Not Kill, Amendment Two says Blood Will Spill"
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